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"Todas" is a form of "todas", an adjective which is often translated as "all". "La" is a definite article which is often translated as "the". Learn more about the difference between "todas" and "la" below.
todas(
toh
-
dahs
)An adjective is a word that describes a noun (e.g., the big dog).
a. all
Todas mis primas tienen los ojos azules. Yo soy la única con ojos verdes.All my cousins have blue eyes. I'm the only with green eyes.
b. all of
Yo he visto todas las películas de Martin Scorsese. Es mi director favorito.I've seen all of Martin Scorsese's movies. He's my favorite director.
c. the whole of
Todas las exportaciones del pequeño país pertenecen al sector minero.The whole of the country's exports belong to the mining sector.
A pronoun is a word that stands in for a noun (e.g., she).
3. (feminine) (plural) (the totality)
A word or phrase that is feminine (e.g., la manzana).
A word or phrase that is plural (e.g., los libros).
a. all
¿Cuál cartera te gusta más? - Me gustan todas, para ser honesta.Which purse do you like the most? - I like them all, to be honest.
b. all of them
¿Ya conociste a mis compañeras de trabajo? - A algunas sí, pero no a todas.Have you met my coworkers yet? - I've met some, but not all of them.
c. everyone (singular) (people)
A word or phrase that is singular (e.g., el gato).
¿Las amigas de Clara fueron a la boda? - Claro. Todas estaban ahí.Did Clara's friends go to the wedding? - Of course. Everyone was there.
d. everybody (singular) (people)
A word or phrase that is singular (e.g., el gato).
¿Ya están todas en el carro? - No. Falta Marta.Is everybody in the car? - No. We're missing Marta.
la(
lah
)A definite article is a word that identifies a noun as specific or known to the speaker (e.g., the girl).
a. the
La pelota está en el tejado.The ball is on the roof.
La leche está en el refrigerador.The milk is in the refrigerator.
A pronoun is a word that stands in for a noun (e.g., she).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).